[MIRROR] Integrated circuits for modular computers (#26196)

Integrated circuits for modular computers (#80530)

This PR integrates circuits for modular computers and a good bits of
their programs.
The peculiarity here is that modular computers have no fixed amount of
unremovable components (except the base one with just a couple ports for
now), instead, they're added and removed along with programs. With a few
exceptions (such as the messenger and signaler), for these program
circuits to work, their associated program has to be either open or in
the background.

For a reason or another, not all programs have a circuit associated to
them, still, however the programs with a circuit are still a handful.
They are:
- Nanotrasen Pay System
- Notepad
- SiliConnect
- WireCarp
- MODsuit Control
- Spectre Meter
- Direct Messenger*
- LifeConnect
- Custodial Locator
- Fission360
- Camera
- Status Display
- SignalCommander

*By the by, sending messages has a cooldown, so it shouldn't be as
spammy. If it turns out to not be enough, I can make it so messages from
circuit will be ignored by other messenger circuits.

The PR is no longer WIP.

I believe modular computers could make for some interesting setups with
circuits, since they're fairly flexible and stocked with features unlike
many other appliances, therefore also a speck more abusable, though
limits, cooldowns, logging and sanitization have been implemented to
keep it in check.

🆑
add: Modular Computers now support integrated circuits. What can be done
with them depends on the programs installed and whether they're running
(open or background).
add: Modular Consoles (the machinery) now have a small backup cell they
draw power from if the power goes out.
/🆑

Co-authored-by: Ghom <42542238+Ghommie@users.noreply.github.com>

code/modules/modular_computers/file_system/programs/maintenance/modsuit.dm

@@ -7,6 +7,7 @@
 	size = 2
 	tgui_id = "NtosMODsuit"
 	program_icon = "user-astronaut"
+	circuit_comp_type = /obj/item/circuit_component/mod_program/modsuit_control
 
 	///The suit we have control over.
 	var/obj/item/mod/control/controlled_suit
@@ -20,12 +21,15 @@
 	. = ..()
 	if(!istype(attacking_item, /obj/item/mod/control))
 		return FALSE
+	sync_modsuit(attacking_item, user)
+	return TRUE
+
+/datum/computer_file/program/maintenance/modsuit_control/proc/sync_modsuit(obj/item/mod/control/new_modsuit, mob/living/user)
 	if(controlled_suit)
 		unsync_modsuit()
-	controlled_suit = attacking_item
+	controlled_suit = new_modsuit
 	RegisterSignal(controlled_suit, COMSIG_QDELETING, PROC_REF(unsync_modsuit))
-	user.balloon_alert(user, "suit updated")
-	return TRUE
+	user?.balloon_alert(user, "suit updated")
 
 /datum/computer_file/program/maintenance/modsuit_control/proc/unsync_modsuit(atom/source)
 	SIGNAL_HANDLER
@@ -43,4 +47,26 @@
 	return controlled_suit?.ui_static_data()
 
 /datum/computer_file/program/maintenance/modsuit_control/ui_act(action, list/params, datum/tgui/ui, datum/ui_state/state)
+	. = ..()
 	return controlled_suit?.ui_act(action, params, ui, state)
+
+
+/obj/item/circuit_component/mod_program/modsuit_control
+	associated_program = /datum/computer_file/program/maintenance/modsuit_control
+
+	///Circuit port for loading a new suit to control
+	var/datum/port/input/suit_port
+
+/obj/item/circuit_component/mod_program/modsuit_control/populate_ports()
+	. = ..()
+	suit_port = add_input_port("MODsuit Controlled", PORT_TYPE_ATOM)
+
+/obj/item/circuit_component/mod_program/modsuit_control/input_received(datum/port/port)
+	var/datum/computer_file/program/maintenance/modsuit_control/control = associated_program
+	var/obj/item/mod/control/mod = suit_port.value
+	if(isnull(mod) && control.controlled_suit)
+		control.unsync_modsuit()
+		return
+	if(!istype(mod))
+		return
+	control.sync_modsuit(mod)